Air cleaner



AIR CLEANER Filed June 27, 1928 CTL Patented Apr. `22, 1930 UNirEDfsTATEs r-Areur usant WILLIAM C. BUTTNER, OF CHICAGO, ILLINOIS, SSTC-NOR T0 THE BASTIAN-BLESSING COMPANY, 0F CHICAGO, ILLINOIS, A CORPORATION' OF ILLINOIS AIR CLEANER Application ledune 27,

This invention relates to air cleaners and it has for its object to provide a device of simple construction and eihcient operation, which can be mounted on a compressor or in any other convenient location in a pressure air line for filtering and removing the moisture which is often present in an objectionable amount in the air, and also for removing lubricant which is often carried along with the air from the compressor, to clean and purify the air for use for painting with an air gun, and for other purposes.

It is highly desirable to provide dry air, free from oil or other lubricant, for painting with an air gun or other methods of spray painting. Dry air is particularly required in painting with lacquer. Tn some sections of the country, and at certain seasons there is an excess of humidity in the air which provides objectionable moisture in the compressed air for spray painting.

My invention has for its object to provide a novel and compact device of simple construction, which can be easily mounted in convenient position in an air line from a compressor to clean the air before it is delivered to the work, and remove the objectionable moisture and lubricant and other impurities so as to deliver dry clean air.

in t-he accompanying drawing illustrating` a selected embodiment of the invention Fig. 1 is a side elevation.

Fig. 2 is a sectional view on the line 2 2 of Fig. 1.

Fig. 3 is a detail perspective view of the base.

Referring to the drawings, a T fitting 4 is mounted on a bracket 5, being conveniently provided with an arm 6 projecting rearwardly and engaging the bracket at the front thereof. This fitting has a side inlet 7, a front outlet 8, a side drain 9, and a top stem 10 upon which is mounted reducer 11 and acasing 12 having a screw cap 13. The casing is conveniently made tubular of any desired size.' The stem has a passage lll communicating with the inlet 7 and with a tube 15 mounted on the end of the stem and within the cleaning chamber 16 of the casing. Another passage 17 in the stem communicates Vcient in operation.

19233. Serial No. 288,568.

with the outlet 8 and with a tube 18 which is rmounted on the stem withinthe chamber and extends adjacent the upper end thereof. A iilter device is arranged in the chamber above the discharge end of the inlet tube 15 and this filter device may be of any suitable construction and conveniently comprises a sleeve 19 carrying a plurality of filters 20. The filters are adapted to iit snugly within the casing and the sleeve is adapted to iit snugly on the tube 18 above the tube 15. The upper end of the tube 15 may conveniently provide-Ya stop to support the sleeve 19 in the casing. Another vpassage 21 in the stem communicateswith the outletV 9 which is normally closed by screw plug 2Q.

The bracket may be made of any desired size and shape for attachment to the base of an air compressor or any other suitable support, and the casing is preferably arranged in upright position and the different connections made so that air under pressure from the compressor will enter the fitting a't'the inlet 7 and pass through the passage 14 and tube 15, from which it is discharged into the cleaning chamber-16 of the casing below the filter. This air will then travel through the iilter, which will remove dirt, excess moisture and oil or other lubricant and the cleaned air will enter the open upper end of the tube 18 and pass down therethrough and through the passage 17, and the outlet 8 to the work.

The dirt, excess moisture and` lubricant which is removed from the air will collect in the bottom of the 'cleaning chamber and maj7 be drained 0E when desired, by operating the plug 22. The discharge end of tube 15 is located at a distance above the stem, which will provide for an expected accumulation of material removed from the air by the cleaning operation without. liability of this material coming incontact with the air Ypressure at the discharge end of the tube 15. f l

The device is convenient and compact in form, itis simple in construction and etii- It `can be mounted on the compressor base or it can be mounted inanyV other convenient position, as may be found desirable. A j

T have shown the invention in a form which has been found to be satisfactory in actual practice but l am aware that changes in the form, construction and arrangement of parts may be made without departing from the spirit, or sacrificing any cf the acl-,vantagesV of the invention, and, therefore, I reserve the right to make all such changes as fairly show within the scope of the following claims.

l claim Y 1. An air cleaner comprising a fitting having an inlet, an outlet, a drain and av stem, said stem having an inlet passage connected with the inlet, an outlet passage connected with the outlet, and a drain passage connected with the drain, a casing` mounted on the fitting and enclosing a cleaning chamber, an inlet tube within the chamber and connected with the inlet passage in the fitting, an outlet tube within the chamber and connected with the outlet passage in the tting, and a filter arranged within the chamber between the discharge end of the inlet tube and the inlet end of the outlet tube.

2. An air cleaner comprising a tting having an inlet and an inlet passage, an outlet and an outletpassage, a casing mounted on the fitting and enclosing a cleaning chamber, an inlet tube within the chamber and connected with the inlet passage, an outlet tube within the chamber andV connected with the outlet passage, and a filter arranged within the chamber between the discharge end of the inlet tube and the inlet end of the outlet tube and comprising a sleeve slidably engaging the outlet tube and supported on the upper end of the inlet tube.

8. An air cleaner comprising a fitting having an inlet and an inlet passage, an outlet and an outlet passage, a casing mounted on the tting and enclosing a cleaning chamber, an inlet tube within the chamber and connected with Vthe inlet passage, an outlet tube within the chamber and connecting with the outlet passage, a filter device mounted on the outlet tube between the discharge end of the inlet tube and the inlet end'of the outlet tube, and a bracket integral with said fitting and adapted to be attached to a compressor base or other support.

4l. An air cleaner comprising a fitting having an inlet and an inlet passage, anoutlet and an outlet passage, a drain and a drain passage, a plug normally closing said drain, a casing mounted on the fitting and enclosing i a cleaning chamber, an inlet tube mounted on the fitting within the chamber and connected v with the inlet passage, an outlet tube mounted on the fitting within the chamber and connected with the outlet passage, said outlet tube extending adjacent to the top of the casing and the inlet tube terminating at a distance below the top of the casing, and a filter device slidably mounted on the'outlet tube and supported by the inlet-tube. I

5. An air cleaner comprising a bracket, a

fitting'integral with the bracket, said fitting having an inlet, an outlet, and a drain, a stem on the fitting having a passage communicating with the inlet, a passage communicating with the outlet and a passage communicating with the drain, a reducer mounted on the stem, a casing mounted on .the reducer and enclosing a cleaning chamber, an inlet tube within the chamber and connected with the inlet passage, an outlet tube within the chamber connected with the outlet passage, the outlet tube extending above the discharge end of the inlet tube, and a filter device arranged within the chamber between the discharge end of the inlet tube and inlet lend of the out-V let tube.

WILLIAM C. BUTTNER 

